Probably Boston & Sandwich Glass Co.
Bottle undamaged, stopper with a bruise to the extension. Bottle with two open bubbles to the body, as made.
6 3/4" HOA, 5 7/8" H bottle, 2 3/8" D base.
Provenance: From the collection of Ernest & Dorothy Schatz of Osterville, MA.
Literature: Parallels Barlow/Kaiser - The Glass Industry in Sandwich, Vol. 1, p. 218, fig. 1280b.